Question

Why is the NPN transistor used for amplification?

Answer 1

Transistors:

1. A transistor is an electronic solid-state semiconductor device that controls current flow and serves as a switch or gate for electrical impulses. Three layers of silicon wafer make up a transistor. Those layers have the ability to carry a current.
2. Transistors are circuit devices that can enhance a signal. It's usually made up of layers of germanium or silicon. A transistor produces very little heat since it takes very little current to operate. Heat, on the other hand, is dependent on its configuration.
3. It can be found in a variety of applications, including amplifiers, oscillators, rectifiers, switches, and more.

Amplification: Amplification is the technique of boosting the intensity of a SIGNAL in the same way. Amplification is the process of raising the magnitude of a variable quantity, particularly the quantity of voltage, power, or current, without changing any other quality. A ratio among two values that does not suggest that the resulting value is bigger than the input value is referred to as amplification.

1. Because electrons are the main carrier in NPN transistors, they are favored due to their increased movement.
2. The NPN is the best choice for a negative ground system.

The most common transistor configuration is the Common Emitter.

1. The +ve supply line of a PNP transistor becomes the common point (circuit ground) of the input and output signals, which is inconvenient for design, debugging, and service.
2. With NPN transistors, the -ve supply becomes the common point, leading in the -ve ground, making design, testing, and management easier.
3. The most cost-effective way to mass-produce Si-based parts is to use huge N-type silicon chips, but PNP transistors require three times the amount of Si chip surface, making them uneconomical when chip prices are a significant element of the element.